Senior Security Engineer

Company: Gauntlet
Location: New York
Type: full_time
Posted: Aug 19, 2026
Views: 0

Join Gauntlet as a Senior Security Engineer, partnering with the Head of Security to build, operate and scale our security program. You'll work at the intersection of capital, risk and technology: securing the systems that power some of the largest and most sophisticated activities in DeFi. You'll own security projects across product, infrastructure and operations, designing controls, automation and detection capabilities that can withstand one of the most adversarial environments in software: billions of dollars in assets on-chain on public blockchains.

About Gauntlet

Gauntlet builds the financial systems of the future. While much of onchain finance is focused on point solutions, we operate across the entire stack to offer best-in-class vault products. Today we serve over $1.5B in client TVL across some of the largest fintechs/neobanks, protocols, exchanges, and capital allocators in crypto — and, increasingly, traditional asset management. Our team brings together traditional finance and crypto-native expertise to deliver durable, sophisticated products for institutional clients moving onchain.

What you'll do;

  • Threat model new product features and integrations and harden systems with effective controls.
  • Operate and evolve the application security toolchain and keep it high-signal for developers.
  • Own day-to-day security operations across the detection stack (EDR, SIEM, on-chain monitoring, identity, cloud): triage what fires, resolve what matters, and reduce noise.
  • Triage vulnerability and bug-bounty findings by real exposure, drive remediation, and support incident response end to end.
  • Take security tooling and projects from evaluation through org-wide rollout, collaborating across engineering, infra and other teams.
  • Automate repetitive, judgment-light security work with AI: vulnerability and AppSec workflows, access reviews, SOC 2 and audit evidence collection, vendor due diligence, and recurring reporting.
  • Build reusable AI components, Claude skills, and agents that engineering and other functions can adopt.

    • What you Bring;

  • 5+ years in hands-on security engineering spanning product or application security and security operations.
  • Track record of technical security assessments of software and systems, including system hardening, security policy analysis and implementing effective controls.
  • An adversarial mindset: you think like an attacker and pressure-test assumptions, including your own.
  • Proficiency in Python, TypeScript, or JavaScript, working with Claude Code, Codex or similar AI tools.
  • Hands-on experience applying AI and LLMs to automation and building reusable tooling or components that other engineers adopted.
  • Experience owning security projects end to end, from vendor selection through org-wide rollout, across multiple teams.
  • Experience securing high-value or high-throughput transaction systems.
  • Clear communication: you explain risk plainly and drive findings to closure.

    • Bonus Points

  • Crypto/blockchain security experience.

    • Benefits & Perks;

  • Remote first - work from anywhere in the US & CAN!
  • Regular in-person company retreats and cross-country "office visit" perk
  • 100% paid medical, dental and vision premiums for employees
  • $1,000 WFH stipend
  • Monthly reimbursement for home internet, phone, and cellular data
  • Unlimited vacation
  • 100% paid parental leave of 12 weeks
  • Fertility benefits
  • Opportunity for incentive compensation
    • Please note at this time our hiring is reserved for potential employees who are able to work within the contiguous United States and Canada. Should you need alternative accommodations, please note that in your application.
    The national pay range for this role is $180,000 - $210,000 base plus additional On Target Earnings potential by level and equity in the company. Our salary ranges are based on paying competitively for a company of our size and industry, and are one part of many compensation, benefits and other reward opportunities we provide. Individual pay rate decisions are based on a number of factors, including qualifications for the role, experience level, skill set, and balancing internal equity relative to peers at the company.
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    About the Company

    Name: Gauntlet
    Location: New York City
    Website: https://www.gauntlet.xyz

    Gauntlet leads the field in quantitative research and optimization of DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, protecting and optimizing the largest protocols and networks in the industry. As of January 2025, Gauntlet manages risk and incentives covering over $35 billion in customer TVL.

    Gauntlet continually publishes cutting-edge research that informs our risk models, alerts, and analysis, and is among the most cited institution — including academic institutions — in terms of peer-reviewed papers addressing DeFi as a subject. We’re a Series B company with around 75 employees, operating remote-first with a home base in New York City.

    Gauntlet’s mission is to drive adoption and understanding in the financial systems of the future. Building with decentralized systems creates novel challenges for mechanism designers, smart contract developers, and end-users of financial products, which are not seen in traditional software development and investing contexts. Gauntlet is dedicated to enhancing our industry’s understanding of this new domain and revealing how to safely navigate the true bleeding edge of 21st-century financial innovation.

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